Process of briqueting friable ores.



i the kin UNITED smgsgrgsn'r orricn CARL were, or BREDELAR, GERMANY.

PROCESS OF BRlQUETlNG FRIABLE GRES- No. 833,639. Specification of Letters Patent. Patented Oct. 16, 1906. Application filed October 26. 1905- Serial No. 284.577.

To (117 WWW it y OOWUBYW mixture of the Permian limestone or other Be it known that I, CARL REmKE, fabrilimestone with cement possesses an enormous cant, a subject of the German Emperor, and binding power, and the ore to be briqueted 50 a resident of Bredelar, Province of West is intimately mixed with the Permian limepha'l'ia, Germany,have invented new and usestone or other limestone cement mixture, an

ful Improvements in Processes for Briqueting the mass so obtained is ressed under great Friable Ores, of which the following is a specipressure into briquets, wliereupon the greatiication est part of the moisture still present is ex- 55 The purpose of the present invention is to elle d. The briquets thus produced stand to bring natural friable ores an ore waste or red heat perfectly and remain solid until redross by means of a suitable method with the moved from the furnace, which is due to the-j.- addition of sui able material into briquet fact that the most finely-ground binding "form and to adapt-the same for usefor the smelting process in the blast-furnaces.

55 Under my invention it is possi do to produce an ore briquet which satisfies all re uirements as regards resistivity and cost 0 production. and-like piece ores can be smeltcd duly in the blast-furnace without pulverizing of the briquet. A special advantage is the low percentage of water in such a prepared briquet, analysis showing the following composition: iron, 56.78 per cent; residue, 3. per cent; lime, 7.01 per cent; moisture, 0.55 per cent. i

The briquets produced according to this method need not be -dried in special furnaces at high temperature, and, besides this, a further saving of expense in the cost oftrans- 0 port is obtained, as unprepared ore contains eighteen to twenty per cent. of water, so that about twenty-five per as t. of the cost of transport is save The new -method consists chiefly in this 35, that to the friable ores as a binding agent is added so-called Permian limestone or other limestone containing a high percentage of calcium carbonate, an addition of a sma quantity of magnesia and good Portland ee- 40 ment, which serves to stimulate the binding ower of the Permian limestone or other imestone. Four parts of limestone are mixed with one part of cement; but these plosive power. The added lime exerts a favorable influence on the smelting process.

The proportion of ore to be briqueted to.,

mcnt mixture varies, as already mentioned, 6 5

accordin to the uality of the ore to be briquete 'lhus, or example, in poor ores an addition of one part of this mixture to six parts of ore is su cient. 2.

I What I do claim as my invention, and desire to secure by Letters Patent, is 1. The process of briquetingcomminuted mineral substances consisting in mixing the.

ores with finely-ground so-called Permian molding this mixture into briquets under high pressure substantially as herein lde scribed.

2. The herein-described process of briquet ing comminuted mineral substances consist- 8o ing in mixin six parts 'of friable ores, wit

one part fine y-ground limestone containing a high percentage of carbonate of lime and a sma l addition of finely-ground magknesia an D- mixture intojbrrquetS-under high pressure substantially as herein described.

In testimony whereof I have signed my name to this spec'fication in the presence 0 two subscribing witnesses.

' 'CARL REINKE. Witnesses:

' Orro Low'rz,

notedthat the binding agent must be finely Lnnwre Genomes.

ground and must be in fi y mixed- The agent has good binding power, but no ex- 6e3 the Permian limestone or other limestone ce-. 1

limestone and good Portland cement and in 000d Portland cement and in mo ding this 85,.;;f 

